Improvement in condensers and feed-water heaters for steam-engines



bien@ ne' anni efec,

JOSEPH DILWORTH 'AND JOHN ooBoURe HODGINS, orv TORONTO,

OANADA.

Letters Patent No. 111,916, dated. February 21, 1871.

IMPROVEMENT IN CONDENSERS AND FEED-WATER HEATER'S FOR STEAM-ENGINES.

The Schedule referred to in these Lettera Patent and part' of the same.

To all whom 'itmag/ concern.:

4Be it known that we, J OSEPH4 DILWORTH and JOHN CoeoUne-HODGINS, of Toronto, inthe county of `York and province of Ontario, Canada, have in vented an Improved Ooudenserand Feed-water Heater for Steam-Engines, andthe following is declared to be a correctdescriptien thereof.

The escape steam from an` engine passes into a chamber abovea series of vertical tubes that passes through acylinder containing the feed-water, and the -Water of condensation and vapors are taken away from the lower ends of these tubes.

The feed-water 1`iasslesintothe chamber nearthe bottom through a check-valve, and to the boiler-by a pipe near the top.

Our invention, as distinguished from feed-Water heaters heretofore constructed, relates to a perforated conve-x protecting plate above the condensing tubes, to preventlthe tubes becoming obstructed` by foreign substances. t

We also arrange the said apparatus so as to effect the transfer of the steam heat to the feed-water, and the removal` of sediment is accomplished by-means of blow-cocks.

In the draw'ing- Figure l is -a vertical section of thc apparatus, and

Figures 2 and 3 are sectional plans'at the `lines a: w and y y, respectively.

The cylinder c is made of a suitable size and shape for receiving the ranges of vertical tubes b Z1, that pass through the heads c d andare secured therein. .The tubes should be of a v small diameter and lininerons we prefer and use coppertnbes.

The head c is sntciently small to pass i'eely into the cylinder a, and the packing e makes a tight joint around this head when in place.

This packing e is made of an India-rubber ring, introduced into 'a V-shaped or dovetail groove around. the interior of the cylinder c, and the head d is bolted upon the upper end of the cylinder a and within the chamber f, formed by an enlargement Of the cylinserves to retain any foreign substance and prevent its i passi-ng into the tubes b and obstructing th/cm.

Around the edges of this `chamber f cocks or valves It are provided, to allow for blowing oi any sediment or accumulation above the perforated plate h. The feed-water is pumped or r forced through the pipe Zand check-valve an, at the lower part of the cylinder a, but above the head c,.aud the heated water passes by the pipe n to the boiler.

Cocks or valves are provided at o,1 around-the lower part of the feed-waterspace inv the cylinder a, so as to allow of blovvingv olf any sediment from the feedwater. A pipe, p, and rose or sprinkler, s, are employed fol' introducing -a spray of coldwater' into the chamber q, below the head c, so as to .condense the remaining portion of any steam that may pass down through the tubes I), and a pipe, r, leads to an air-pump by preference, or to a tank from which the feed-water is taken to the pump.

By this construction the parts are easily kept free from' sediment or foregnmatter, leakage from expansion or contraction is prevented, the parts are not eX- the boiler.

The size of this apparatus must be in proportion to the engine and boiler. 'We have found that about live feet of condensing surface should be provided to each horse-power of the` engine.

Air may be blown out of thea'pparatus by the cock t.

1. The perforated plate 71. in the chamber, f, above the upper ends of the vertical tubes b of the feed-water heating apparatus, -for the purposes set forth.

. 2..'Dhe blow-cocks or valves applied to and combined with the chamber'f and perforated plate h, for the purposes set forth.

Sigurd by u s this 14th day of November, A. D. |1870.

J GSEPH DILWORTH. JOHN O. HODGINS.

XVitnesses:

J. B. BALDWIN, A. CHRISTIE. 

